901229
Ammonium sulfate
anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99.0%
Synonym(s):
Mascagnite
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About This Item
Linear Formula:
(NH4)2SO4
CAS Number:
Molecular Weight:
132.14
UNSPSC Code:
12352314
NACRES:
NA.21
EC Number:
231-984-1
MDL number:
Assay:
≥99.0%
Grade:
ACS reagent, anhydrous
Form:
powder or crystals
Solubility:
water: soluble 132 g/L at 20 °C
Quality Level
grade
ACS reagent, anhydrous
product line
Redi-Dri™
assay
≥99.0%
form
powder or crystals
impurities
≤0.005% Insoluble matter
ign. residue
≤0.005%
pH
5.0-6.0 (25 °C, 5%)
mp
>280 °C (dec.) (lit.)
solubility
water: soluble 132 g/L at 20 °C
density
1.77 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 ppm, nitrate (NO3-): ≤0.001%, phosphate (PO43-): ≤5 ppm
cation traces
Fe: ≤5 ppm, heavy metals: ≤5 ppm (by ICP-OES)
storage temp.
room temp
SMILES string
N.N.OS(O)(=O)=O
InChI
1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
InChI key
BFNBIHQBYMNNAN-UHFFFAOYSA-N
General description
Ammonium sulfate is an ammonium salt commonly used as fertilizer. It can be synthesized by neutralizing sulfuric acid with ammonia. It can enhance the phytotoxicity of several herbicides like glyphosates. Ammonium sulfate is formed as a co-product during the manufacture of caprolactam, a precursor of nylon.
Application
Ammonium sulfate was used in methyl cellulose precipitable tannin assay to evaluate wine tannin in finished wine samples. It was also used in making externally mixed aerosols for analyzing the 1 × 3 tandem differential mobility analyzer (1 × 3-TDMA), which is mainly employed for determining the irreversibility of the hygroscopic growth factor of aerosol particles.
Legal Information
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC
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Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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The 1-by-3 tandem differential mobility analyzer for measurement of the irreversibility of the hygroscopic growth factor.
Rosenoern T, et al.
Aerosol Science and Technology, 43(7), 641-652 (2009)
Influence of yeast strain on Shiraz wine quality indicators.
Holt H, et al.
International Journal of Food Microbiology, 165(3), 302-311 (2013)
Ammonium Compounds.
Weston CW, et al.
Kirk-Othmer Encyclopedia of Chemical Technology (2003)